Answer:
The pH at the equivalence point is lower than 7
Explanation:
Given the titration involves a strong acid and a weak base
An example is the reaction between ammonia and hydrochloric acid in the aqueous phase
The pH of the base will ordinarily start high and drop rapidly with the additions of acid. As the equivalence point is approached, the pH will change more gradually, until finally one drop will cause a rapid pH transition through the equivalence point.
If a chemical indicator is used—methyl orange would be a good choice in this case—it changes from its basic to its acidic colour.
In strong acid-weak base titrations, the pH at the equivalence point is not 7 but below it. This is due to the production of a conjugate acid during the titration; it will react with water to produce hydronium ions.
Answer:
The rows running from left to right are called Periods and the columns going up and down are called Groups.
Explanation:
Answer:
when cell is exposed to radiation we get brain tumour or cancer.
I believe its false because chlorophyll absorbs light from the sun, it doesn't reflect it.
I think d is wrong because Everything else is correct for sure. also, minerals vary in the position they hold and have different chemical compounds.